//
// Copyright (c) 2010 Luís Reis
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
using System;
namespace Pine.Core
{
	public sealed class StringValue : Value, IEquatable<StringValue>
	{
		public string Value {
			get;
			private set;
		}
		
		public StringValue (string val)
		{
			Value = val;
		}
		
		public override string ToString ()
		{
			return Value;
		}
		
		public override Value GetPineType() {
			return PineType.StringType;
		}
		
		public override Value Add (Value right)
		{
			if (right == null)
				throw new ArgumentNullException("right", "Right operand of addition operation is null(not NullValue)");
			return new StringValue(Value + right.ToString());
		}
		
		public override bool Equals(object obj)
		{
			if (obj == null)
				return false;
			
			string str = obj as string;
			if (str != null)
				return Value == str;
			
			return Equals(obj as StringValue);
		}
		
		public bool Equals(StringValue obj) {
			if (obj == null)
				return false;
			
			return Value == obj.Value;
		}
		
		public override int GetHashCode() {
			return Value.GetHashCode();
		}
	}
}

